Getting a close-up look at Philip Johnson’s Glass House, which was opened to the public last summer, has not been so easy. Guided tours of the iconic Modernist structure—designed by the architect for himself and completed in 1949 in New Canaan, Connecticut—are limited to 10 people and are only offered seven months a year. The 2007 tickets were snatched up long before the June 23 grand opening, and the 2008 season sold-out just as quickly.